Disk-harrow.



WQ S. GRAHAM.

DISK HAHRUW APPLICATION TILED MAY 8,1914.

Patented J an. 19, 1915.

3 SHBETSSHBET 1.

UVVE/VTU I M I ATTORNEYS W. S. GRAHAM.

- DISK HARROW.

APPLICATION FILED MAY 8, 1914.

Patented Jan.19,1915.

3 BHEETS-SHEBT 2.

.1. p a 4;.- I

. WITNESSES:

W. S. GRAHAM.

DISK HARROW.

APPLIUATION FILED MAY 8, 1914.

1,125,514. Patented Jan.19,1915.

3SHEBTS-SHEET 3.

. 5 1 60 4a? 70 67595 N 39 6'7 7 4a 66 W/TNESSES nnrrsn srArns WILLIAMS. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOB T0 PARLIN & ORENDORFF COMPANY,OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

DISK HARROW.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed May 8, 1914. Serial No. 837,152.

To all whom it may concern Be it known that 1, WILLIAM S. GRAHAM, acitizen of the United States, and a resident of Canton, in the county ofFulton and State of Illinois, have invented certain new and usefulImprovements in Disk Harrows, of which the following is a specification,reference being had to the accompanying drawings.

This invention .relates to disk barrows of the type employing twoseparate gangs of disks working side by side'and adapted to in angledmore orless relative to'each other.

It is one ofthe objects of my invention to provide new and improvedmeans for sup-- porting and controlling scraper blades and for givingthem a swinging movement whereby the disks are adapted to be scrapedduring the operation of the harrow.

It is one of my-objects to provide improved means for throwing thescrapers out of contact with the cutters and for holding them in suchinoperative position but ready for use when desired.

It is another object to provide improved means for locking the scrapersin operative scraping position in contact with the peripheries of thecutters.

It is one of the more specific objects of my invention to provide asingle leverhaving two distinct operations. by one of which operationsthe scraping blades are held out of contact. with the disks and by theother of which operations the scraping blades are locked in position toengage the disks at or near their outer peripheries.

It is another object of my invention to improve devices ofthis type insundry details hereinafter pointed out.

In the drawings. Figure 1 a pian view of a harr'ow embodying myimprovements, having the drivers seat and the, weightbox'cs removed;Fig. 2 is a side elevation of my improved machine; Fig. -3 issubstantially a section taken on lines 33 of Fig. 1 but with theWeight-boxes in position on-the' devices; Fig.4 is a rear elevation ofone of the gangs, partly in section, the weight-box being removed; Fig.5 is an enlarged vertical section through one of the gangs showing thescraper-blades in their normal positionadjacent to the centers of thedisks;

Fig. 6 is a similar view but showing the scraper-blades inpositiontoscrapethe outer edges of the disks; Fig. 7 is an enlarged sideelevation, partly in section, of one of the devices for mounting thescraping blades adjustably in operative position; Fig. 8 is an enlargeddetail, beinga perspective view of the lever for adjusting and lockingin position the disk scraper-blades.

Referring to the several figures of the drawings. in which correspondingparts are indicated by the same reference ch a racters,-.-. 20-2lindicate tvvo parallel bars constituting a short tongue connected attheir rear ends to a transverse frame-bar 29. and connected at theirforward ends to a bracket 23. The bracket 23 is supported by a truckcomprising an axel- 2s and wheels 2526,

said truck being connected to said bracket manner upon the framework bymeans of a support Each gang of disks comprises a transverse bar 31having depending fromits under face standards carrying at their lowerends bearings 34.35. respectively, in which is mounted a shaft 30 uponwhich the disks 3'? are mounted. said disks being spaced apart upon saidshaft by suitable sleeves 38. Each of the cross-bars 31 has secured uponits upper face a weight-box 39 adapted to carry sand. or other suitablematerial, for increasing the downward pressure upon the disks forcausing the device to runat the proper depth. Each of the bearings 34-35 is adapted to have oil fed to it by a tube l0 extending downwardthereto from an oilcup 41 mounted in suitable position in the sand-box39.

Each of the gangs of disks is connected near its outer end to the mainframe of the machine by means of two bars +2- ll The bars 43 arepivotally connected at their rear ends to the bearings 33, respectively,and are pivotally connected at their forward ends to thediagonally-positioned brace-bars 29. respectively, by means of bolts44.-said bars 43 extending through suitable slots 45 in the verticalflange of the main transverse frame-bar 22, as best shown in Fig. 3. The

bars endowments attheir solire ends to the transverse bars 29, resectively, by the said bolts 44 and extend therefrom in positionoverlying the bars 14,

'5 being connected at their rear ends to the transverse bars 31 of therespective gangs. I 46-47 indicate levers pivotally mounted upon theshort tongue-bars 20- 21,.respec- 'tively, andadapted to be locked inadjusted position relative to circular rack-bars IS--49 carried by saidbars. Said levers are connccted at their lower ends to the front endsof-bars BO BI, respectively, the rear ends of, which bars are pivotallyconnected to the bcarings'M ofthc respective gangs.

" SQ-53 indicate diagonally -,extending brace-bars connected at theirrear ends to" the bars 31 of the gang frames und'connected at theirforwar bye stroke 01. 'oneof the lovers 46 4? upon its release from therack-bar 4M9, the cor-' responding gang will be angled through themcdiumof the bar or link 50-51 relative to of a circle about such offsetends, which are revolubly mounted in brackets. co es car med-by the maintransverse frame-bar 22. Keyed or otherwise fixed upon one end of therod 54 is a lever 67 which is adapted to be adjusted in the ordinary wayrelative to 11'011'0111511 rack-bar formed upon said bracket.

As will be readily understood, by a stroke of the lever 57 in counterclockwise direction in Fig. 2, theorank portion of the rod 54 will beswung downward relative to the brackets 55--56.- As is best shown insaid Fig. 2, the crank portion of said; rod directly overlies the barsor links 5M1, whereby a downward movement of such rod causes at the sametime a downward movement of the bars or links 50-51 causin a like depression of the inner ends of t e angs. The bar 54 is provided with brac ets58 559 mounted thereon engaging the outer faces of the bars SO-51,serving as means for eteadymg the gangs against undue lateral movement.

As Will be seen from an inspection of Fig. 2, when the lovers id-4:7 are'vcu a stroke W in clockwise: direction in said figure, the lower endsof the levers are moved on the are of a circle about the axis upon whichsaid levers turn. It would accordingly fol low, if no means were used toprevent it,

6 that as one of the levers was moved back rearwardlv v ends to the barsEd -51, 20 respectively. As will be readilyundersto'od,

angs positively in do H and to. angle the. the correchange in thevertical adjustment of the inner ends of the gangs upon the operation otthe. levers 4. the lmks 51 are provided with curved interunahateport1ons,as clearly shownin Fi 22, the curvature bein such as to oli'setand equalize the vertical movement of the front ends of the links 50-431. That is tosay,"ais thc- "frontcnd of the "link 51 is moved fromits uppermostposition to its lowermost 'pbsition.*the link '51- wouldalso .3

be shifted longitudinally of itself, bringin the link intosuoh-aposition that the bar 5 I would'oierliethe uppermost point ofcurvature. Asthe leverfl was then moved in the same direction to theother extreme, these front end ofthe linki'ifwouldbe moved froi'njtslowermost position. again to its up permost'position, mnving'th-elink'51longitudinallyofitsel'f still farther. in the same direction,:clianing'the point of engagement I of the bar fittrom the uppermost curvatureagain to the normal. The-scrapingdevices by which the disks,

37iof eachg'ang arekept cleanare mount ed so as to beoperated in unison.For this as pulposc, each of the transverse" bars 31is provided with twobrackets 64-+65, in the, outer ends of which is 'revolubly mounted arock sluift '66. Upon eachvof the rock-shafts" f 66 are fixedly mounteda plurality of brack-' 10c ets 67, each carrying a scraper-blade 68adapted to-be brought into engagementwith one" of the disks 37', asheremafter described. Fined upon the transverse bar 31 of each of thegangs is a bracket 69 10a through the'rear end of which the shaft 66passes. Between ,the bracket '69 and the next adjacent bracketfi? thereismounted a coiled spring 70 tending to move said bracket 67 togetherwith the rock-shaft 66 and partsmounted thereon away from the bracket 69so as to hold the scrapers 68 nor-, mally in contact with the faces ofthe disks,

as will be seen from an inspection of Fig. 4.

As is also shown in saidfigure, one end of the spring 70 engages thetransverse bar 31 and the other end engages a lug on the bracket 67against which the spring bears. The spring is thus adapted to hold therock shaft 66 turned normally to the limit of its 12 motion in counterclockwise direction in Fig. 5-in such position that the scraperblades 68are held adjacent to the centers of the disks 3?.

One of the scraper-blades 68 of each gang is mounted upon its rock-shaft66 by means of a device now to be described in lieu of one of thebrackets 67'. As best shown in Fig. 7, 71-72 indicate two bracketspivotally connected together bymeens of a bolt 66.. The scraper-blade'68is secured to the bracket 71 in the same position relative to itsdisk 37andrelative to the rock-shaft 66 as if. it were Supported by one of thebrackets 67.. The bracket 71 has pivotally connected to its forward enda foot-lever 75 which is held adjustably in position relativeto saidbracket by means of a bolt 76 passing through a slot 77 in the bracketin rear of the ivot upon which said foot-lever is mounte As will bereadily understood, by a downward stroke upon the lever 7 5 therock-shaft 66 will be turned in clockwise direction in. Figs. 2, 5 and6. causing all of the scrapers 68 to move in clockwise direction in saidfigures about the rock-shaft 66,

moving the lower ends of thescrapers out of the position shown in Figs.2 and 5 adjacent to the centers of the'disks into on past-the positionshown in Fig. 6 adjacent to the peripheries'of said disks. In order tolimit the downward stroke of the lever-75, a set-screw 78 ismounted inthe bracket 72 adapted to be broughtinto contact with the transverse bar31. a

tionally in position against turning upon.

said bolt. Mounted upon thebracl et 69 is an arm 82 adjacent to thelever 79. As best shown in Fig. 1, the lever 79. is adapted to be.turned outward from the position shown at the right-hand side of saidfigure to the position shown at the left-hand side of said figure,bringing the arm 8341f said leverinto bearing upon the arm- 82 of thebracket and causlng the rocksh'aft 66 with the parts. carried .therebytomove outward against the action of the; spring 70, -'carrying thescrapers 68 out of. contact with thefdisks 37. As shownin thisfigure,the

lever 79 is adapted to be turned in thisway intoasubstantially centeredlocking p'osition, whereby the scrapers 68 are held out of contactwith'the disks until the lever is again turned to its normal position asshownat the right in Fig. 1. The lever 79 has another function inaddition to thatof holding the scrapers 68 out of contact with the disks'as just-described. As best shown in Fig.8. said lever is provided with.an arc-shaped. cam-flange 84 the faces of which converge toward oneendto approximately.

thetliickness of the lever.. When the footleveri 75 has been depressedas shown in Fig. 6', turning the scraper-blades into con-v tact wi ththe peripheries. of: the disks 37,

the lever 79 can be given a stroke toward the center of the machine,bringing the lever 79' into position overlying the arm 82 and holdingthe rock-shaft 66 against being returned gages the arm 82, the positionat which the scrapers 69 are held in this way relative to theperipheries of the disks being determined by the longitudinal positionof the flange 84 relative to the arm 82, which is dependent'upon theextent to which the lever 79 is turned on its pivot-pin 80. I

By my construction and arrangement, the lever 79 is adapted to be movedinto a selflocking position in one direction from the normal for holdingthe scrapers out of contact with the cutters, or into a variable lookingposition in the otherdirection from the normal for holding the scrapersswung against the action of the spring 70 away from the centers of thecutters into variable position opposite the. peripheries of the cutters.

W'Vhat I claim as nrv invention and desire to secure by Letters Patent,is-- 1; In a harrow, tllQCOlllbllltllllOl'l of a frame, a gang ofreroluhle cutters mounted on said frame; scrapers for said revolublecutters movable laterally of said frame, yielding means tending to holdsaid scrapers in contact with said cutters. and a lever pivotallymounted relative to said scrapers and movablelaterally therewith adaptedto beswung laterally into a selfdocking position in engagement with theframework for holding the scrapers out of operative contact with saidcutters.

2. In :1 ha iron". the combination of a gang of revoluhle cutters. arock-shaft, scrapers for said revoluble cutters adapted to he movedlaterally with said rock-shaft. yielding means acting upon saidrock-shaft tend ing to hold said scrapers in contact with said cutters,and a lever movable-laterally with said rock-sl'ulft adapted by an operatire stroke laterally 'to move said scrapers out otoperativo contactwithsaid cutters and adapted to he moved into a substantially-centeredlocking position for holding said scrapers out of opcrativecontact withsaid cutters.

3. In a harrow. the combination of a. gang of revoluhlc cutters. arock-shaft, scrapers for said rcvoluhlc cuttersadapted to be movedlaterall i with said rock-shaft. yielding means acting upon saidrock-shaft tending to hold said scrapers in contact with said cutters. alever pirotally mounted on said rock-shaft upon an axis at an angle tosaid shaft. and means adapted to be ei'igaged by said lever for movingsaid rock-shaft and said scrapers laterally to carry the scrapers out ofoperative contact with the cutters.

lawshaft and said scrapers laterally to carrv of'irevoluble cutters, arock-shaft, scrapers for said revoluble cutters adapted to be movedlaterally with said rock-shaft, yielding means acting upon said rockhafttendaringto-ihold said scrapers in contact with said" cutters, a leverpivotally mounted on said! rock-shaft upon an axis at an angle to said'shaft, and means adapted to be engagedby said lever for moving saidrocktheiscrapers' out of operative contact with the cutters, said leverbeing adapted to be moved into a substantially-centered lockingpositionfor holding said scrapers out of lau operatirecontact with saidcutters.

' Inaharrow, the combinatio'n'of a gang of-re\-'oluble cutters. arock-shaft, scrapers carried by said rock-shaft, yielding means actinguponsaid rock-shaft tending to hold :said scrapers in contact with saidcutters,

and a lever pivot-ally mounted upon an axis to bear for forcing saidshaft laterally of the machine for carrying said scrapers out of contactwith saidcutters.

7. In a ha rrow, the combination of a gang 40"of revoluble cutters, arock-shaft, scrapers carried by said rock-shaft, yielding means actingupon said rock-shaft tending to hold said scrapers in contact withsaid-cutters, a lever adapted to act upon said rock-shaft 45. to movesaid scrapers out of contact with said cutters, and means for holdingsaid lever against turning relative to said shaft as said shaft isrocked.

8. In a liarrow, the combination of a gang 50,01 reroluble cutters, arock-shaft, scrapers carried bysaid rock-shaft. yielding means actingupon saidrock-shaft tending to hold said scrapers in contact with saidcutters, a lever adapted to act upon said rock-shaft to 552; movesaid'scrapers out of contact with said cutters, and frictional means forholding said leveragainst turning relative to said shaftas said shaft isrocked.

9. In a barrow, the combinatimi of a gang ;.of revoluble cutters, arockshaft,scrapers carried. by said rock-shaft, yielding means actingupon said rock-shaft tending to hold saidscrapers in contact with saidcutters, lever adapted to act upon said rocl'cshaft to move'sai'scrapers out ofcont'act with said cutters, and a spring adapted tofrictionally engage said lever for holding it against: turning relativeto said shaft as said shaft is rocked. v w

'10. In a harrow, the combination of a .70

frame, a gang of cu ttcrs revolubly mounted thereon, a rock-shaftrevolubl mounted on said frame, scrapers carried y said rock shaft,yielding means acting upon said rockshaft tending to hold sai'dscrapersin 0011- tact with said cutters, an arm extending from said frame, abracket fixedly mounted 3:: tact with said cutters, an arm extendingfrom said frame, a bracket fixedly mounted on said rock-shaft adjacenttosaidarm, and a lever pivotally mounted on said bracket adapted to beturned into engagement with said arm for forcing said'rock-shaft longi-jtudinally of itself against the action of said yielding means forcarrying said'scrapers' out of contact with said cutters, said leverbeing adapted to be turned into a'substantially centered lockingposition for holding I said scrapers out of operative contact with Isaid cutters. 12. In a harrow, the combination of a gang ofv revoluble'cutters, 'a rock-shaft, scrapers movable with. said rock-shaft, yieldingmeans tending to hold {said roc c-shaft turned in position with thescrapers adjacent to the centers of said cutters, a lever mounted onsaid shaft and having a' stroke longitudinally thereof and means for'roclc ing said shaft for carrying said scrapers into contact with theperipheries of the cutters, said lever upon the rocking of said shaftbe, ing adapted to be given an operative stroke 11 whereby. the shaft isheld in turned position independently of the rocking means against theaction of said yielding means.

13. In a harrow, the combination of a gang of rcvoluble cutters, arock-shaft, scrapers movable with said rock-shaft, yielding meanstending to hold said rock-shaft turned in normal position withthescrapers adjacent to the centers of the cutters, means f(u".ro ':l-'.ingsaid shaft for carrying the scraper s'int'o contact with the peripheriesof the cutters, a, lover having a stroke longitudina-llyl of said shaft,and an arni' normally "out .ofpositi'on for engagement said le-ll v. veradapted to be engagdb said lever J I -gang of revoluble cutters, arock-shaft.

'when the shaft has been rocked to carry 14. In a harrow, thecombination of a' gang of revoluble cutters, a rock-shaft, scrapersmovable with said rock-shaft,

yielding means tending to hold said rock-' shaft turned in normalposition withthe scrapers adjacent to the centers of the cutters, alever having a stroke longitudinally of said shaft, an arm adapted to beengaged by said lever as desired for holding the shaft against returningto normal position when the shaft has been turned for carrying thescrapers into contact with the peripheries of the cutters, andfrictional means for holding said lever against turning relative to saidshaft as said shaft is rocked.

15. In a harrow, the combination of a gang of revoluble cutters, arock-shaft, scrapers movable with said rock-shaft, yielding meanstending to hold said rockshaft turned in position with the scrapersadjacent to the centers of said cutters, a lever having a strokelongitudinally of said shaft, and means for rocking said shaft forcarrying said scrapers into contact with the peripheries of the cutters,said lever upon the rocking of said shaft being adapted to be given avariable operative stroke whereby the shaft is held in variable turnedposition against the action of said yielding means.

16. Ina harrow, the combination of a gang of revoluble cutters, arock-shaft, scrapers movable with said shaft turned'in normal positionwith the scrapers-adjacent to the centersof the cutters, a lever havinga cam thereon adapted to have a'stroke longitudinally of said shaft, andan arm adapted to be engaged by said cam for holding the shaft againstreturning to normal position when the shaft has been turned for carryingthe scrapers into contact with the peripheries of the cutters.

17. In a harrow, the combination of a scrapers movable with saidrock-shaft, yielding means tending to hold said rockshaft turned innormal position with the scrapers adjacent to the centers of thecutters, a lever having stroke longitudinally of said shaft, said levercomprising a cam flange arranged on an are about its pivotal point, andan arm adapted to be engaged by rock-shaft, yielding means tending tohold said'rocksaid cam flange upon a stroke of said lever to hold saidshaft in variable turned position when the shaft has been rocked tocarry the scrapers into contact With the peripheries of the cutters.

18. In a harrow, the combination of a gang of .revoluble cutters, arock-shaft, scrapers movable with said rock-shaft, yielding meanstending to hold said rockshaft turned in position with the scrapersadjacent to the centers of said cutters, a lever pivotally mounted onsaid shaft adapted to swing longitudinally thereof and adapted when saidshaft is turned carrying said scrapers into contact with the peripheriesof the cutters to be swung to hold the shaft in turned position againstthe action of said yielding means.

19. In a harrow, the combination of a gang of revoluble cutters,scrapers for said revoluble cutters, yielding means tending to holdsaid'scrapers in contact with said outters adjacent to their centers,and a lever by a stroke of which in one direction said scrapers areadapted to be moved out of contact with said cutters and by a stroke ofwhich in the other direction when said scrapers have been moved intocontact with the peri 'iheries of said cutters the scrapers are adaptedto be held in such position against the action of said yielding means.

20. In a barrow, the combination of a gang of revolublo cutters, arock-shaft, scrapers carried by said rock-shaft, yielding means tendingto hold said rock-shaft turned in normal position with the scraperssubstantially opposite the centers of the cutters and in contacttherewith, a lever carried by said rock-shaft, and an arm mountedadjacent to said lever, said lever being adapted by a stroke in onedirection to be brought into engagement with said arm for forcing saidrock-shaft longitudinally of itself against the action of said yieldingmeans and adapted by a stroke in the opposite direction when saidrock-shaft has been turned to bring the scrapers into contact with theperipheries of the .cutters to engage said arm to lock the scrapersagainst returning to position opposite the centers of the cutters.

WILLIAM S. GRAHAM.

Witnesses:

C. B. REED, \VILLIAM C. LIN'ION.

